To install the new spark plugs, assemble the tools required, such as a spark plug socket that fits with a ratchet, a range of extensions and a gap gauge that will be used to measure and regulate the gaps on the new plugs. The removal plug boots can be separated with the help of special equipment, and the tightening of the boots and the plugs will be necessary with the help of a torque wrench. Order new plugs beforehand, and make sure they are the right kind that fits your engine, and set them to the right gap before beginning the replacement process. Let the engine cool down, and then take off the plastic cover. During the waiting period, observe the defects of the new plugs and close the gaps with the use of a tapered thickness gauge to make sure that the gap is accurate and the side electrode aligns with the center one. Once you are ready, unplug or unscrew the ignition coil or
Spark Plug Wire, and only pull on the boot. Apply forced air to the spark plug hole to remove debris to avoid contamination. Insert the spark plug socket and screw it counterclockwise to take it out, with some more parts having to be removed on some of the cylinders. Compare old spark plug to some reference attaching a chart to determine engine condition and a layer of anti-seize compound may be applied to the threads of the new plugs before fitting. Install the new plug by hand-tightening the new plug into the hole, followed by a torque wrench or a ratchet, and installing it with the help of a short length of a rubber hose to make the installation easier and prevent cross-threading. Lastly, reconnect the plug wire or ignition coil by twisting it back in place, and so forth, connecting the rest of the plugs, one at a time, so that they do not become mixed up.